Rice University graduate Neelam Singh and a team of researchers had recently started working on a new "spray-on" battery. And by spray-on, we mean paint. Imagine painting an entire wall with a color, only to realize it's one massive battery (or numerous batteries all connected).
The paint consists of five layers, with each layer bringing the necessary materials for a battery: cathodes, anodes and polymer separators. The initial experiment involved nine bathroom tile-based batteries that were connected together, with a solar cell on one tile. Overall, the batteries pumped out 2.4 volts and managed to power lights that spelled out "Rice" for 6 hours.
This experiment only marks the beginning of this new technology, and it paves the way for the creation of newer types of batteries. Currently, certain Lithium-Ion batteries are ruling the technological field, but they are limited due to their size and shape. With paintable batteries, gadgets could use up less space for batteries and more space for powerful upgrades.
Sources: cnet.com, nature.com